You are performing a Gram stain on an unknown microorganism. You add the crystal violet to the smear and let the stain sit for one minute. After waiting, you observe the slide under a microscope and see purple bacilli (rods) arranged in chains. Is it safe to assume this is Gram positive?

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

Plz ! for many generations farmers in north america have been choosing to cross corn plants with large ears of corn each year this results in the new generation of plants also growing large ears of corn. what is the technique called? a. selective breeding. b. natural selection. c. mitosis. d. asexual budding.

Which of the following is an effect of the uneven heating of the earth by the sun? a sea breeze a land breeze a convection current all of the above